Multi-functional traction machine is used for long distance engineering construction (over 2,000m). The hydraulic control technology enables machine rise and lower automatically. With the help of advanced automatic wire-aligning system and integral hydraulic control, the machine can automatically show value of traction force and align wire. The functions of speed changing, gear-shifting and braking are fully controlled by hydraulics which save labor and prevent from potential safety hazards.

Real-time monitoring on traction force is conducted during traction to ensure that traction force won’t exceed 50% of yield strength for HDPE pipe materials. The corresponding automatic wire-aligning system prevent potential safety problems during traction. The engine used are manufactured by global well-known brand which ensure high-quality work can be done even for high temperature desert areas.

HDPE pipe with an external diameter same as internal diameter of host pipeline is dragged through special U-shape diameter reduction machine to have the cross sectional area compressed into double U-shape layers. The cross section area of HDPE liner is then reduced to approximately 60% of its original value. The liner is inserted into host pipeline rapidly with the help of traction machine. After HDPE pipe is inserted to target position, internal atmosphere is pressurized to ensure compressed liner restore to its original size and hence create a tight fit between HDPE pipe and host pipeline.

Pipeline Internal Anticorrosion Joint Coating Machine

Introduction

Featuresr

Highly Effective Blasting and Cleaning:The main body of machine can crawl and move inside pipeline by remote wireless control. There is a single button used to control blasting and cleaning. Location orientation camera is used to find welding joints and locate problem areas. There are two sets of high speed rotary steel wire brush can be used for forward direction and backward direction. Joint coating machine reciprocates forward and backward slowly to ensure that the foreign matter and rust within 80mm (adjustable) of welding joints are cleaned. The internal surface after cleaning meet requirements of ST3 level of GB/T8923—1998 standard.

Internal Joint Coating Function:Once the blasting and cleaning work is done, remote wireless controlled machine can locate corresponding welding joints and stop right at the location, and then the material supply pump and rotary spraying cup are initiated to conduct reciprocating spray coating work. The atomized coating materials are then sprayed to ranges within 100mm of welding joints. Spraying work is done repeatedly four times to ensure thickness of anticorrosion coating layer. The width of spraying is adjustable between 180 to 200mm.

The thickness measuring function and recording function of cameraCamera system with taking pictures and recording videos functions are installed on pipeline internal anticorrosion inspection machine. This system is able to rotate 360°along pipeline radial direction. After welding joints blasting, cleaning and coating are finished, this system can be used to inspect if blasting work is done properly and if there is any area omitted for coating. The thickness measuring instrument carried by the system can test thickness of coating and show results on remote wireless control panel.

Pipeline Internal HCC fiber-reinforced Coating/Painting

Introduction

Featuresr

By coating or painting HCC fiber-reinforced materials inside pipeline, the anticorrosion capability of oil pipelines is improved dramatically. Through a series of air blowing, pigging and sand blasting, based on principal of air ventilation coating method, the applicator is placed into pipeline and coating materials are injected. With the help of air, coating materials are spread uniformly inside pipeline and cured to form internal anticorrosion coating layer. The anticorrosion, anti-abrasion and pressure compressive strength capabilities of pipeline are enhanced, the purposes of lengthening pipeline operation life, reducing maintenance circles and lowering maintenance costs are achieved.

Pipeline Internal Anticorrosion Joint Coating Technology

Introduction

Featuresr

This technology is mainly used for single steel tubing that already has internal anticorrosion coating. After pipelines are welded together on site, conduct joint coating treatments for internal circumferential welding joints. The equipment used is able to clean and coat internal surface of pipeline joints simultaneously with advantages of small size, light weight, fast on site construction speed and high construction efficiency. Either remote wireless control or wire control can be used.

The main structures of this equipment contain crawling system, location
orientation system, blasting and cleaning system, material injection
system, rotary spraying system and central control panel. The crawling
system can control the equipment to move forward and backward; the
position orientation system utilizes COMS location device which enables
operation crew determine positions required to rehabilitate and coat
accurately and directly; blasting and cleaning system can effectively
conduct blasting treatments for circumferential joints and the adjacent
areas; material injection system has separate storages and pumps for
different liquid coating materials to be used with isothermal control
system available. Different coating materials are supplied to the rotary
spraying system and sprayed to internal surface of pipeline after
materials are completely mixed and atomized. When using atomized powder
materials to coat, medium frequency heating equipment outside the
pipeline is required to help accelerate curing process. When joint
coating robots are working, all control orders are inputted by using
remote wireless control panel system.

Inner Expansion Ring Rehabilitation for Pipeline Joints

Introduction

Featuresr

The main reason of pipeline water leakage is leakage at pipeline joints. Pipeline joint leakage may be caused by the following reasons: Not qualified construction, joint misplacement and fall off because of ground settlement; Poor quality of pipe fittings and tubing materials, Nonstandard joint size and rubber ring aging. Based on researches, most water leakage problems don’t happen at the water pipeline body but the pipeline joints. Therefore, pipeline joints are the main parts required enhancement and rehabilitation. The inner expansion ring rehabilitation method for pipeline joints designed by Kelinruier can solve above problems based on real field application experience feedbacks.

The inner expansion ring rehabilitation method utilizes professional hydraulic equipment to compress stainless steel expansion ring, and then the special designed high-strength seal rings are fastened at both endings of pipeline joints. The installation pressure are designed to meet requirements of pipeline operating condition. A flexible connection with durable and hermetic sealing properties is created at pipeline joint, which will help host pipeline recover operation designed pressure. Therefore, by using this technology, company can not only save considerable costs but also expect constructions to be finished rapidly which will show significant profit in short-term.